Automatic weighing-machine.



No 869,204. PATENTED OCT. 22. 1907. R. D. WEBB.

AUTOMATIC WBIGHING MACHINE APPLIOAUO! run .03. a. 1001.

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No. 869,204. PATENTED 00122. 1907.

' R. D. WEBB.

AUTOMATIC WEIGHING MACHINE.

APPLICATION FILED APB-.8. 1907.

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ROBERT D. WEBB, OF MINDEN, LOUISIANA.

AUTOMATIC WEIGHING-EMACHINE.

Specification of Letters Patent.

Patented Oct. 22, 1907.

Application filed April 8 1907. Serial No. 367.090.

To all whom it may concern:

Be itknown that 1, ROBERT D. WEBB, a citizen of the United States, and aresident of Minden, Webster parish, Louisiana, have invented certain newand useful Improvements in Automatic Weighing-Machines, of which thefollowing is a specification.

This invention comprises improvements in automatic weighing and dumpingmachines wherein apair of receptacles, attached to a pair of scalebeams, are automatically and alternately filled with a given weight ofgrain or other material and dumped, and the purpose of the invention isto provide in such a machine means whereby the scale beam which is inweighing position will be free to move for a given initial distance fromsaid position without being retarded or interfered with by any otherpart of the mechanism, so that the scale will weigh accurately. Aftermoving said initial dislance from its weighing position the rising scalebeam releases the other beam of the machine which then aids in theoperation of the mechanism.

in the ac(.:ompanying drawing Figure 1 is a side elevation of themachine, the supporting frame being shown in central vertical section;Fig. 2 is an end elevation of the machine; Fig. 3 is a central verticalsection through the feed hopper, and Fig. 4 is a top plan view of one ofthe scale beams.

Referring to the drawing, A indicates a suitable frame in the upperpartof which, between the sides 1 and 2, are mounted scale beams B andB. A feed chute E is arranged centrally in the upper part of the irame,and the scale beams are pivoted at opposite sides of the chute uponknife-edge bearings 3, which fit into suitable cups in the sides of theframe. The scale beams are alike in construction, each beam, as shownbest in Fig. 4, comprising parallel bars 4 and 5, connected by across-piece 6, said bars being provided with kniieedgc bearings 23 forsupporting the beam, and the longer arm 4 carrying adjustable weights u.lcceptaclcs D and D are suspended from the shorter arms of the beams Band B respectively, said receptacles having cars 7 which are pivotallyconnected to the beams near the pivotal points or bearings of the beams.Each receptacle has a gate or valve 8 at its lower end which is mountedupon a rock-shalt 9 having cranks 10 at the sides of the receptacleconnected to togglelevcrs ll. Links 12 connect the ends oi the shorterarms 01' the scale beam with the toggle-levers as shown, the arrangementbeing such that when the scale beam is in horizontal position the togglelevers connected thereto will be straightened and the valve or gate willbe closed, and when the scale beam is tilted the toggle levers will beflexed and the valve or gate opened.

The rods 12 have slots 8 at their upper ends through which pins 8" onthe beams extend, thus allowing for lost motion between the rods andbeams, so that during the initial movement of a beam from its horizontalposition it will not be obstructed or retarded by pressure against therods.

The feed chute E has branch chutes e and c extending over the upper endsof the receptacles D and D respectively, and valves or gates 13 and 14are arranged within the branch chutes e and e respectively. The valve 13is mounted on a rock-shaft 15 which is provided with a crank 16, andsaid crank is connected by a link 17 to one end of alever 18, which isjournaled at its center upon the rock-shaft 19,'the latter beingjournaled in upward extensions 1. and 2 of the frame and extendingthrough the feed hopper. The valve 14 is secured to the rock shaft 20having a crank 21 which is connected by a link 22 to the lever 18 a1'ranged parallel with the lever 18 upon the opposite side of the hopper,and journaled upon the rock-shaft 19. When the levers 18 and 18 arerocked in one direction, it will be evident that, through theconnections described, the valves 13 and 14 will be moved, one intoclosed position and the other into open position, and when the leversare rocked in the opposite direction the positions of the valves will bereversed, so that, according to the positions of the valves, thematerial to be weighed will be directed into one or the other of thereceptacles.

The upper end of the lever 18 is connected by a link 23 to a standard 24which projects upwardly from the scale beam B, being secured to saidbeam above its pivotal point, and the upper end of the lever 18 isconnected by a link 25 to a standard 26 which is connected to the beam Babove the pivotal point of the latter. Each standard has a weight 27 atits upper end. The links 23 and 25 are connected to the standards bymeans permit ting a limited amount of play or lost motion between thestandards and the links. Thus, the link 23 has a slot 23 through which apin 28 on the standard extends and the link 25, as shown in dotted linesin Fig. 1, has a similar slot 25 engaged by a pin 29 upon the standard26. The link 23 also has a cam-surface 23 on its under side, which whenthe standard 24- moves to vertical position, rides onto a fixed support30, thus raising the slotted end of the lever 23 slightly and taking theweight of said lever off 01' the pin 28 on the scale beam. Similarly,the link 25 has a cam-surface 25 on its lower side which rides on to afixed support 31 when the standard 26 moves from the inclined to thevertical position, thus taking the weight of the link off of the pin 29.When a scale beam is in the horizontal cranks with the standards, andmeans for supporting said links out of engagement with the standardswhen the weights are poised.

S. In an automatic weighing machine, two scale beams having weightedstandards projecting above the beams, receptacles connected to saidbeams, valve mechanism for directing the material to be weighed intosaid receptacles alternately, a lever tor operating said mechanism,links connecting said lever with the standards, cranks arranged at anangle to one another, links connected to the cranks and having slot andpin connections with the standards, and means for supporting said linksout of engagement with the standards when the latter are poised.

9. In an automatic weighing machine, two scale beams having weightedstandards projecting above the beams, receptacles connected to saidbeams, valve mechanism for directing the material to be weighed intosaid receptacles alternately, a lever for operating said mechanism,links connecting said lever with the standards, cranks arranged at anangle to one another, links loosely connecting aid cranks with thestandards. and fixed supports arranged to hold said links out offrictional engagement with the standards when the latter are poised.

10. In an automatic weighing machine, two independently movable scalebeams having weighted standards projecting above the beams, receptaclesconnected to said scale beams, valve mechanism for directing thematerial to be weighed into said receptacles alternately, leversconnected to said valve mechanism, links connected to the lovers andhaving lost-motion connections with said standards, means for supportingsaid links out of frictional engagement with said standards when thelatter are poised. cranks arranged at an angle to one another, linksconnected to said cranks and having lost-motion connections with saidstidards, and means for supporting said latter links out of frictionalengagement with said stand ards when the standards are poised.

ll. ln an automatic weighing machine. the combination with pivoted scalebeams having weighted standards above the beams, receptucl connected tothe beams, and valve mechanism operatively connected to the standards,of cranks arranged at an angle to one another, links con nected to saidcranks and tving lost motion connections with said standards, and meansfor supporting the links out of frictional engagement with the standardswhen the latter are poised.

12. In an automatic weighing machine, the combination with pivoted scalebeams having weighted standards above the. beams, receptacles connectedto the beams, and valve mechanism operatively connected to thestandards, of cranks arranged at an angle to one another, linksconnected to said cranks and having lost motion connections with saidstandards, said links having cam surfaces and supports arranged to beengaged by said surfaces when the standards move to poised position.

ill. In an automatic weighing machine, a scale beam having a weightedstandard projecting above the beam, ptaclc connec ed to the beam, valvemechanism for controlling the admi. ion of material to said receptacle,a lever for operating said mechanism. a link connected to said lever andhaving a lost motion connection with said standard. said link having acam surface. and a support arranged to be engaged by said surface whenthe standard moves to poised position.

14. In an automatic weighing machine, two scale beams each having aweighted standard projecting above the beam, rceplacles connected to thebeams, valve mechanism for controlling the admission of material to saidreceptacles, levers for operating said mechanism, links connected tosaid levers and having lost motion connections with said standards. saidlinks having cam surfaces, and supports arranged to be engaged by saidsurfaces when the standards move to poised positions.

the valves, and means for holding said connections out of engagementwith the beams when the latter are in weigh ing position to. Anautomatic weighing machine comprising two scale beams, receptaclesconnected to said beams, connections between said beams whereby theascending beam releases the opposing beam and is locked in inclinedposition. and means for holding said connections out of engagement: withthe beams when the latter are in weighing position.

ii. In an automatic weighing machine, scale beams. receptacles connectedto said scale beams, connections between the said beams whereby theascending beam releases the descending beam and is locked out ofweighing posi tion, and means :for alternately holding said connectionsout of engagement with the beams until the latter have respectivelymoved from their original weighing position.

.18. In an automatic weighing machine, scale beams, re ceptaclesconnected to the scale beams, valves for controlling the admission ofmaterial to said receptacles, con nections between said beams and thevalve mechanism for operating the valves, and means for holding saidconnections out of engagement with the beams while the latter are inweighing position.

19. In an automatic weighing machine, scale beams, receptacles connectedto the scale beams, valves for con trolling the admission of material tosaid receptacles. mechanism between said beams and valves for operatingthe latter. and means for holding said mechanism out of engagement withthe beams until the latter have moved from their original weighingpositions.

20. In an automatic weighing machine, a scale beam, a receptacleconnected to the scale beam, a valve for con trolling the admission ofmaterial to said receptacle, mech anism between said beam and valve foroperating the latter, and means for holding said mechanism out ofengagement with the beam until the latter has moved from its originalweighing pos' ion.

21. In an automatic weighing machine, scale beams, re ccptuclesconnected with said beams, valves for controlling the admission of thematerial to said receptacles, mechanism for operating the valves,standards for operating the said mechanism, and means for holding saidmeehanism out of eng ement with the standards while the beams are inweighing position.

22. In an automatic weighing machine, scale beams having standardsprojecting from the same, receptacles co11- nected to said beams, valvesfor controlling the admission of material to said receptacles, mechanismfor operating said valves, and means for supporting said mechanism outq'ement with the standards when their respective re in weighingposition.

23. In an automatic weighing machine, the scale beam having a standardprojecting from same, a receptacle connected to said beam, a valve forcontrolling the admission of material to said receptacle, mechanism "foroperating said valve, and means for supporting said mechanism out ofengagement with the standard when the beam is in weighing position.

24. In an automatic weighing machine, scale beams having standardsprojecting from the same, receptacles connected to said beams. valvesfor controlling the admission of material to the receptacles. mechanismfor operating said valves. including cranks arranged at an angle to oneanother and mechanism for turning the same loosely connected to saidstandards, and means for holding said mech anism out of frictionalengagement with the standards while the respective beams are in weighingposition.

i. In an automatic weighing machine, scale beams having standardsprojecting therefrom, receptacles connected to the scale beams,connections between said standards whereby the standard connected to theascending scale beam releases the other standard and is locked out ofweighing position, and means for alternately holding said connectionsout of engz gemont with the standards until the latter have respectivelymoved out of their original weighing positions.

26. In an automatic weighing machine, scale beams with standardsprojecting therefrom, receptacles connected to said beams, mechanismloosely connecting said standards whereby each standard is alternatelylocked in fixed position, and means for alternately holding saidmechanism out of engagement with the respective standards while same arein original weighing positions.

27. In an automatic weighing machine, scale beams with standardsprojecting therefrom, and mechanism loosely connecting said standardswhereby each standard is alternately locked in fixed position as thereceptacles connected with the scale beams are alternately filled.

28. In an automatic weighing machine, scale beams with weightedstandards projecting therefrom, receptacles eonnected to said beams,mechanism loosely connecting said standards whereby each standard isalternately locked in fixed position, and means for alternately holdingsaid mechanism out of engagement with the respective standards whilesame are in original position;

29. In an automatic weighing machine, scale beams with weightedstandards projecting therefrom, and mechanism loosely connecting saidstandards whereby each standard is alternately locked in fixed positionas the receptacles

